Blender Addons DiNusty uses

Name	URL	Cost	Reason
EZ Lattice	blenderartists.org	Free	Quick Lattice tool
Hardops	gumroad.com	Paid	For complex or simple Booleans quickly
Loop Tools	extensions.blender.org	Free	Nice circle shape from selection feature
Machin3Tools	gumroad.com	Free	Nice radial menu and workflow changes
Modifier List	extensions.blender.org	Free	Better listing of modifier stack and extra details / functions
UVPackmaster3	gumroad.com	Paid	A Must have if you want to use Blender
Zen UV		Paid